In 1990, due to the death of Ayatollah Khomeni, Iran adopted its current anthem after a competition that year. As the Islamic Revolution was ten years ago by this point, the anthem reflects more about the success of the Islamic Republic (the lyrics reference Bahman, which is the month in the Persian calendar of the revolution) and is meant to foster pride in its accomplishments. However, those who protest the government policies during the uprisings in the 2020s do not sing the anthem[1] and instead use the popular protest song Ey Iran, as those who protested the Shah before the Islamic revolution did.
Sources:
[1] Nizam Missaghi, “An Anthem Of Controversy – Why Iranians Eschew The National Symbol,” Iran International, November 29, 2022, https://www.iranintl.com/en/202211292512.
Special thanks to: Josh Lim for the Farsi text, Sid Dabir for the sheet music, and Keith Terrett for the music file.